/Engine/Source/Editor/DataLayerEditor/Public/DataLayer/DataLayerDragDropOp.h
Drag/drop operation for dragging layers in the editor
class FDataLayerDragDropOp : public [FDecoratedDragDropOp](API\Editor\UnrealEd\DragAndDrop\FDecoratedDragDropOp)
TArray<TWeakOb...
DataLayerInstances
The labels of the layers being dragged